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5da408818b
This new "level" argument will allow the trace sources to label the
traces for different purposes, and filter out some of them if they
are not relevant to the current target. Right now we have 5 different
levels:
- USER : the least verbose one, only a few functional information
- PAYLOAD: like user but also displays some payload-related information
- PROTO: focuses on the protocol's framing
- STATE: also indicate state internal transitions or non-transitions
- DEVELOPER: adds extra info about branches taken in the code (break
points, return points)
83 lines
2.5 KiB
C
83 lines
2.5 KiB
C
/*
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* include/proto/trace.h
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* This file provides functions for runtime tracing
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*
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* Copyright (C) 2000-2019 Willy Tarreau - w@1wt.eu
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _PROTO_TRACE_H
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#define _PROTO_TRACE_H
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#include <common/buffer.h>
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#include <common/compat.h>
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#include <common/config.h>
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#include <common/ist.h>
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#include <common/mini-clist.h>
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#include <types/log.h>
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#include <types/sink.h>
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#include <types/trace.h>
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extern struct list trace_sources;
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extern THREAD_LOCAL struct buffer trace_buf;
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void __trace(enum trace_level level, uint64_t mask, struct trace_source *src, const struct ist where, const struct ist msg);
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/* return a single char to describe a trace state */
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static inline char trace_state_char(enum trace_state st)
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{
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return (st == TRACE_STATE_RUNNING) ? 'R' :
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(st == TRACE_STATE_WAITING) ? 'w' :
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'.';
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}
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/* return a single char to describe an event state */
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static inline char trace_event_char(uint64_t conf, uint64_t ev)
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{
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return (conf & ev) ? '+' : '-';
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}
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/* registers trace source <source>. Modifies the list element!
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* The {start,pause,stop,report} events are not changed so the source may
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* preset them.
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*/
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static inline void trace_register_source(struct trace_source *source)
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{
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source->lockon = TRACE_LOCKON_NOTHING;
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source->level = TRACE_LEVEL_USER;
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source->detail_level = LOG_NOTICE;
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source->sink = NULL;
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source->state = TRACE_STATE_STOPPED;
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source->lockon_ptr = NULL;
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LIST_ADDQ(&trace_sources, &source->source_link);
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}
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/* sends a trace for the given source */
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static inline void trace(enum trace_level level, uint64_t mask, struct trace_source *src, const struct ist where, const struct ist msg)
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{
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if (unlikely(src->state != TRACE_STATE_STOPPED))
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__trace(level, mask, src, where, msg);
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}
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#endif /* _PROTO_TRACE_H */
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/*
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* Local variables:
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* c-indent-level: 8
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* c-basic-offset: 8
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* End:
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*/
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